I understand your reasoning and your request is a fair one but for the same reason that I do not disclose the number of precious metals I own is the same reason I wish for my wallets to remain anonymous as well.
...trust can be established in private and not publicly.
If you want to
private message me, I can verify it then delete it; I can then vouch that you were mining in 2013. If I were to reveal such information after saying I wouldn't - my decade long reputation here would have been in vain. Contact me to discuss and get my PGP key. Or, if you don't trust me - contact minerjones.
Otherwise, you are reducing your chances of getting funded by 90%, which makes me believe you are not serious about this. Every month we get a dozen newbies looking for unpaid workers to build their specific dream. If you could
prove seven years of mining, people would listen to your ideas. Think about it.